Table 2.

Muscle strength grades based on manual muscle test

Grade	Description
0	absence of muscle contraction
1	trace muscle contraction
1.5	active movement through partial range of motion with gravity eliminated
2	active movement through full range of motion with gravity eliminated
2.5	active movement through partial range of motion against gravity
3	active movement through full range of motion against gravity
3.5	active movement through full range of motion against gravity and slight resistance
4	active movement through full range of motion against gravity and moderate resistance
4.5	active movement through full range of motion against gravity and considerable resistance but not quite normal
5	normal muscular strength